EP 0858153 A1 19980812 - Method for controlling a power plant
Title (en)
Method for controlling a power plant
Title (de)
Verfahren zur Steuerung einer Kraftwerksanlage
Title (fr)
Procédé de commande d'une centrale électrique
Publication
Application
Priority
EP 97810072 A 19970207
Abstract (en)
A method for controlling a power plant which delivers electrical power to an electrical grid. This grid has a grid frequency which fluctuates around a nominal frequency (Fo). The power output of said power plant is controlled as a function of a control frequency, in such a matter that the power output is increased when the control frequency decreases below said nominal frequency (Fo), and in the other hand the power output is decreased when the control frequency increases beyond said nominal frequency (Fo). The grid frequency is continuously measured. The measured grid frequency (Fm) is averaged to give as a moving average a slowly varying averaged trend frequency which is charactersitic of the long term behaviour of the grid frequency. The averaged grid frequency is used as said control frequency, if said measured grid frequency (Fm) lies within a predetermined band, around said averaged grid frequency. The measured grid frequency (Fm) is used as said control frequency, if said measured grid frequency lies outside said predetermined band. <IMAGE>
IPC 1-7
IPC 8 full level
F02C 6/00 (2006.01); H02J 3/24 (2006.01); H02P 9/00 (2006.01); H02P 9/04 (2006.01)
CPC (source: EP US)
H02P 9/04 (2013.01 - EP US)
Citation (search report)
- [YA] US 4593364 A 19860603 - GHRIST III WILLIAM D [US]
- [A] EP 0141372 A1 19850515 - HITACHI LTD [JP]
- [XY] DR. E. WELFONDER ET AL.: "Einsatz eines Mikrorechners zur nichtlinearen Filterung des Netzfrequenzrauschens bei der Primärregelung", VDE-FACHBERICHTE, vol. 30, 1978, BERLIN, pages 303 - 312, XP002034916
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0858153 A1 19980812; EP 0858153 B1 20030416; CN 1081848 C 20020327; CN 1190283 A 19980812; DE 69720950 D1 20030522; DE 69720950 T2 20040311; JP 4142144 B2 20080827; JP H10225192 A 19980821; KR 100513950 B1 20051128; KR 19980070253 A 19981026; MY 117873 A 20040830; TW 405291 B 20000911; US 6118187 A 20000912
DOCDB simple family (application)
EP 97810072 A 19970207; CN 97123447 A 19971231; DE 69720950 T 19970207; JP 2540298 A 19980206; KR 19970076811 A 19971229; MY PI9705670 A 19971125; TW 86117498 A 19971122; US 97482297 A 19971120